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Core: document KeyedDefaultDict

This commit is contained in:
Fabian Dill 2022-08-12 06:52:01 +02:00 committed by black-sliver
parent b702ae482b
commit 2e428f906c
1 changed files with 3 additions and 0 deletions
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3
Utils.py
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@ -411,6 +411,9 @@ def restricted_loads(s):
class KeyedDefaultDict(collections.defaultdict): class KeyedDefaultDict(collections.defaultdict):
"""defaultdict variant that uses the missing key as argument to default_factory"""
default_factory: typing.Callable[[typing.Any], typing.Any]
def __missing__(self, key): def __missing__(self, key):
self[key] = value = self.default_factory(key) self[key] = value = self.default_factory(key)
return value return value